The next efficiency revolution : creating a sustainable materials economy /Essays on the following interesting subjects: viz. I. government, II. Revolutions, III. The British constitution, etc.The location of Yamatai. A case study in Japanese historiography 720-1945. [With a pref. by L. Carrington Goodrich].The location of Yamatai : a case study in Japanese historiography 720-1945.Umweltproblem Bergbau : Strategien gegen die Ausbeutung der Erde /Globales Netzwerk : wie Computer helfen können, die Umwelt zu retten /